The Vespiary

The Hive => Newbee Forum => Topic started by: endo1 on October 17, 2003, 12:53:00 PM

Title: Tech grade HBr in GAA turned dark
Post by: endo1 on October 17, 2003, 12:53:00 PM

Any reason why a Tech grade 33% HBr in GAA from a professional well known supplier would be ummm... black? Can it be stored OK for a few months at room temp? It might have gotten a little warm in storage over the summer.... Is it still useable?

Title: Decolorizing suggestion
Post by: Rhodium on October 19, 2003, 02:48:00 AM

I assume that bromine has formed by some kind of oxidation or by UV-irradiation (sunlight). Add some hypophosphorous acid to the solution and stir for a day, and hopefully the color will be gone. Then store the decolorized acid dark and cool.